<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <table align="center" border="1" cellpadding="10" cellspacing="0">
        <thead>
            <tr>
                <th>name</th>
                <th>sex</th>
                <th>age</th>
            </tr>
        </thead>
        <tr>
            <td>1</td>
            <td>2</td>
            <td>3</td>
        </tr>
        <tr>
            <td>11</td>
            <td>21</td>
            <td>31</td>
        </tr>
    </table>
</body>
</html>